metrics: expose state of WebRTC sessions (#2662)

README.md

@@ -1487,7 +1487,7 @@ srt_conns_bytes_received{id="[id]",state="[state]"} 1234
 srt_conns_bytes_sent{id="[id]",state="[state]"} 187
 
 # metrics of every WebRTC session
-webrtc_sessions{id="[id]"} 1
+webrtc_sessions{id="[id]",state="[state]"} 1
 webrtc_sessions_bytes_received{id="[id]",state="[state]"} 1234
 webrtc_sessions_bytes_sent{id="[id]",state="[state]"} 187
 ```

internal/core/metrics.go

@@ -221,7 +221,7 @@ func (m *metrics) onMetrics(ctx *gin.Context) {
 		data, err := m.webRTCManager.apiSessionsList()
 		if err == nil && len(data.Items) != 0 {
 			for _, i := range data.Items {
-				tags := "{id=\"" + i.ID.String() + "\"}"
+				tags := "{id=\"" + i.ID.String() + "\",state=\"" + string(i.State) + "\"}"
 				out += metric("webrtc_sessions", tags, 1)
 				out += metric("webrtc_sessions_bytes_received", tags, int64(i.BytesReceived))
 				out += metric("webrtc_sessions_bytes_sent", tags, int64(i.BytesSent))

internal/core/metrics_test.go

@@ -220,11 +220,11 @@ webrtc_sessions_bytes_sent 0
 			`hls_muxers\{name=".*?"\} 1`+"\n"+
 			`hls_muxers_bytes_sent\{name=".*?"\} [0-9]+`+"\n"+
 			`hls_muxers\{name=".*?"\} 1`+"\n"+
-			`hls_muxers_bytes_sent\{name=".*?"\} [0-9]+`+"\n"+
+			`hls_muxers_bytes_sent\{name=".*?"\} 0`+"\n"+
 			`hls_muxers\{name=".*?"\} 1`+"\n"+
-			`hls_muxers_bytes_sent\{name=".*?"\} [0-9]+`+"\n"+
+			`hls_muxers_bytes_sent\{name=".*?"\} 0`+"\n"+
 			`hls_muxers\{name=".*?"\} 1`+"\n"+
-			`hls_muxers_bytes_sent\{name=".*?"\} [0-9]+`+"\n"+
+			`hls_muxers_bytes_sent\{name=".*?"\} 0`+"\n"+
 			`rtsp_conns\{id=".*?"\} 1`+"\n"+
 			`rtsp_conns_bytes_received\{id=".*?"\} [0-9]+`+"\n"+
 			`rtsp_conns_bytes_sent\{id=".*?"\} [0-9]+`+"\n"+
@@ -243,9 +243,9 @@ webrtc_sessions_bytes_sent 0
 			`srt_conns\{id=".*?",state="publish"\} 1`+"\n"+
 			`srt_conns_bytes_received\{id=".*?",state="publish"\} [0-9]+`+"\n"+
 			`srt_conns_bytes_sent\{id=".*?",state="publish"\} 0`+"\n"+
-			`webrtc_sessions\{id=".*?"\} 1`+"\n"+
-			`webrtc_sessions_bytes_received\{id=".*?"\} [0-9]+`+"\n"+
-			`webrtc_sessions_bytes_sent\{id=".*?"\} [0-9]+`+"\n"+
+			`webrtc_sessions\{id=".*?",state="publish"\} 1`+"\n"+
+			`webrtc_sessions_bytes_received\{id=".*?",state="publish"\} [0-9]+`+"\n"+
+			`webrtc_sessions_bytes_sent\{id=".*?",state="publish"\} [0-9]+`+"\n"+
 			"$",
 		string(bo))
 

internal/staticsources/rtsp/source_test.go

@@ -119,7 +119,7 @@ var testMediaH264 = &description.Media{
 	}},
 }
 
-func TestRTSPSource(t *testing.T) {
+func TestSource(t *testing.T) {
 	for _, source := range []string{
 		"udp",
 		"tcp",